Carving-machine



(No Model.) 2 Sheets-Shet 1.

T. L. SMITH.

OARVING MACHINE. No. 452,322. Patented May 12,1891.

r E Z I? 22; i in.

ll m- Wi iz ass as .2'zzzfezw"ar;

viz/2372 222 5,

(No Model.) 2 Sheets-Sheet 2.

T. L. SMITH. GARVING MACHINE.

N0.'452,322. Patented May 12,1891.

zwww P U ITED STATES PATENT Orrrcn.

THOMAS L. SMITH, OF REEDSBURG, ASSIGNOR TO THE MILNVAUKEE OARVING COMPANY, OF MILWAUKEE, WISCONSIN.

CARVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 452,322, dated May 12, 18 91 Application filed June 23, 1888. Serial No. 278,041- (No model.) i

To alt whom it may concern.- transverse ways Z) b for the upper trans- Be 11; knownthat I, THOMAS L. SMITH, a citi: versely-sliding section of the work-table. zen of the United States, residing at Reeds- D is a rigid rectangular frame, supported burg, in the county of Sank and State of Visat each side and arranged to oscillate on the consm, have invented certain new and useful ends of cone-pointed screws n n in the hang- Improvements in Carving-Machines; and I do ers N N or other suitable supports. Between herebydeclarethatthefollowingisafull,clear, projecting arms or cars at the front end of and exact description of the invention, which the frame D is supported the pulley-yoke E will enable others skilled in the art to which on the ends of cone-pointed screws (Z (Z, in a 10 it pertains to make and use the same, referline parallel with the axis on which said ence being. had to the accompanying drawframe D oscillates. At each end of said yoke, ings, and to the letters of reference marked in lines intersecting its axis of oscillation at thereon, which form a part of this specificaright angles, are pivoted between cone-pointtiOll. ed screws ffthe upper ends of the depending T5 The main object of my invention is to provibratory arms F F. 5 duce or duplicate carvings from a pattern or G is the tool-carriage, made in the form of model by tracing the pattern or model with an open elongated quadrangle and provided a guiding tool or follower, which causes a at the center of each end with projections like or similar movement of a cutting tool or which are pivoted in lines at right angles 20 tools, and to that end to relieve the carriage thereto between the lower bifurcated ends of of belt-pull and shake or vibration in transthe arms F F on cone-pointed screws f f. mitting power to the cutting tool or tools. H H H are tool-holders, cruciform in shape,

It consists, essentially, of certain peculiarias shown most clearly in Figs. 3 and 5. The ties of construction and arrangement of the horizontal limbs of said tool-holdersare swivz 5 tool supporting and guiding mechanism, of eled at the ends between the sides of the carthe cutting-tool-driving mechanism, of the riage' G on cone-pointed screws g g, in lines support for holding the work and pattern or intersecting the axis of said carriage at right model, dtc. angles. The horizontal limbs of said tool- In the accompanying drawings like letters holders are provided with upwardly-project- 0 designate the same parts in theseveral figing arms h h, which are connected bya hori- 8o ures zontal rod 7t, so that any lateral inclination Figure 1 is a perspective view of my imof one tool-holder upon the pivot-bolts 9 will proved machine. Fig. 2 is a plan view, on an produce a like inclination of the other toolenlarged scale, of the pulley-yoke from which holders. Each of the upright limbs of said 35 the tool-carriage is suspended. Fig. 3 is a tool-holders is-provided at the lowerend with similar View of the tool-carriage. Fig. 4 is a jaws or fastenings for securing the guiding cross-section of the pulley-yoke through one and cutting tools therein. of the pulley-brackets. Fig. 5 is a detail in To the pulley-yoke E, justinside of the arms perspective of a modified form of the tool- F F, are swiveled on studs or screws 6, as

40 carriage and of the cutting-tool-drivingmechshown in Figs. 2 and 4, the rearwardly-pro- 9o anism. Fig. 6 is a perspective view of a majecting bifurcated pulley-brackets e. chine containing a modified form of the out 0 O are upright driving-shafts, journaled ting-tool-driving mechanism; and Fig. 7 is a at their upper ends in the brackets c, and plan view of the pulley-yokes and their conprovided between the limbs of said brackets 45 nections in said modified machine. with grooved pulleys 0, andjournaled at their A represents the frame of the machine, lower ends in the upright limbs of the outwhich supports the work-table. It is formed ting-tool holders H, so as to conform to the with longitudinal ways a a for the lower lonangular movement of the carriage-supporting gitudinally-sliding section B of the work-taarms F F. The driving-shafts O O are formed 5o ble, which is provided on its upper face with or provided at their lower ends in said tool- I00 holders with jaws, chucks, or other suitable fastenings, (not shown,) by means of which the cutting-tools are secured thereto. The rear side of the pulley-yoke E, inside of the rear pivot-screws f, is made open, and each of the pulleys 0 0 is connected by a belt with a suitable driving-pulley (not shown) at or near the rear end of the oscillating frame 13.

The rearwardly-projecting portion of frame D is provided with adjustable counterweights D D, by means of which the front end of said frame and the tool-carriage, with its connections suspended therefrom, are counterbalanced.

Referring to Fig.5,0' represents a modified form of the d living-shaft, bearing atits upper end, like the shafts O, in a swiveled bracket 6, but provided at its lower end, just above the tool-holder II, with a flexible section 0". The rigid upper portion of the shaft 0 is inelosed in a rigid tubular sheath P. The lower flexible portion of said driving-shaft is inclosed in a flexible sheathing 1), attached at its lower end to the tool-holder H and at its upper end to the sheath P, which at that point is provided with a bearing for the lower end of the rigid portion of said driving-shaft. The tool-carriage G is formed at the middle of each end, in the line of its axis, with trunnions g, which bear in sleeves g pivoted at right angles to said trunnions on cone-pointed screws f, between the lower bifurcated ends of the vibratory arms F. This construction permits of the oscillation of the carriage G upon its axis and the inclination of the tools in any direction for the purpose of undercutting.

My improved machine operates as follows: The pattern or model and the blanks to be carved are firmly secured to the upper section 0 of the work-table, the blanks on each side of the model or pattern in proper position to be operated upon by the cutting-tools. The work is then moved into convenient position to be operated upon and the cutting-tools rapidly rotated. The surface of the pattern is traced by the guiding-tool, which produces a like and simultaneous movement of both the cutting-tools. The vibratoryarms, swinging backward and forward on the pivot-bolts (l (l and sidewise on the pivot-boltsff, allow the carriage G to be moved freely in any lateral or horizontal direction, and the frame D oscillating on a horizontal axis in the line of the pivot-bolts n a permit of the free vertical movement of the tool-carriage. A slight under-cut can be made by swinging the carriage laterally or endwise, so as to carry the driving-shafts O O and the cutting-tools in line therewith away from a perpendicular in any desired direction, and by moving the worksupporting table in a corresponding direction into proper position to be operated upon by the cutting-tools.

By the employment of driving-shafts having flexible sections, like that shown in Fig.

5, more abrupt under-cuts can be made without moving the upper rigid portions of the driving-shafts and the carriage-supporting arms F F out of perpendicular positions or moving the work correspondingly.

Referring to Figs. 6 and 7, illustrating a machine containing a modified form of driving mechanism, I represents a pulley-yoke supported at the ends on cone-pointed screws 1' t' in uprights A A, rising from the frame of the machine, so as to oscillate on a horizontal axis. To this yoke at or near its ends are pivoted on cone-pointed screws 1 l, in lines intersecting its axis of oscillation at right angles, the bifurcated rear ends of vibratory arms L L. A little inside of the pivot-bolts Z Zan d parallel therewith are journaled in said yoke I, shafts each provided with a larger and a smaller pulley I and 1 In the front bifurcated ends of the arms L L are pivoted in lines parallel with the axes of screws ll recessed swivel-blocks R R on cone-pointed screws Z Z.

K is a yoke formed at the ends with rearwardly-projecting offsets, which are pivoted in the swivel-blocks R R on cone-pointed screws 0 0' in a line parallel with the axis of oscillation of yoke I. To the rear side of the yoke K are pivoted the bracket-bearings It on studs or screws as shown in Fig. 7.

The rigid eutting-tool-driving shafts O O bear at their lower ends in the tool-holders II H, as previously described, but at their upper ends they are supported and bear in the brackets 7r, k, which are bifurcated to receive the pulleys o 0, fixed on said shafts and centered in the axis of oscillation of the yoke K, so that the pull of the driving-belts will be exerted directly through the pivot-screws r r and Z Z on the arms L L in the direction of their length. The yoke K, being movable independently of the tool-carriage and its guiding mechanism, permits the inclination to the tool-carriage of the shafts O O and the cutting-tools without moving the tool-carriage or its guiding mechanism for that purpose. In this manner undercutting may be done without employing the upper transversely-sliding section C of the work-table, (shown in Fig. 2,) a simple longitudinallysliding table B being used.

The arms F F are bent outwardly adjacent to the ends of yoke K, to permit of a greater vibration laterally of the arms L L, and the rigid oscillatory frameD is supported at each side on cone-pointed screws (1 (Z in the upper ends of the standards A A. Otherwise the tool-carriage guiding and support ing mechanism is essentially like that described in connection with Fig. 1.

\Vith the form of driving mechanism last described the frame D may be suspended in an upright position, and the arms F F, connecting the tool-carriage therewith, may be placed in a horizontal position, so that the driving mechanism and the carriage-guiding IIO mechanism will be separated and cannot interfere with each other in their independent movements.

It will be observed that in the driving mechanism described in connection with the main construction and several modifications the rigid tool-driving shafts are extended upwardly from the tool-carriage and have bearings and pulleys at their upper ends apart from and independent of the tool-carriage, so that the belt-pull, instead of being exerted upon the tool-carriage, is received either by the frame D or the armsL L. Any vibration, shake, or movement of the tool-carriage by the driving-belts is thus avoided and the carriage is left free to respond more readily to the force exerted by the operator in moving it.

In place of the arms h h and connectingrod h',a rigid spindle may be attached to the guiding-tool holder, extended upwardly par- 'allel with the shafts O O, and jointed to the yoke E or yoke K by means of a bracket similar to brackets cor k, or by any other suitable connection. By this means the inclination of either tool will cause alike inclination of the others.

I do not claim, broadly, in this application as my sole invention the combination of a rigid frame capable of oscillation on a horizontal axis, a tool-carriage provided with a guiding and one or more cutting tools and vibratory arms having jointed connections at opposite ends with said oscillatory frame and with said carriage; nor the combination of a rigid frame capable of oscillation on a horizontal axis,vibratory arms having jointed connections with said frame, a tool-carriage having jointed connections With the opposite ends of said arms, a guiding and a cutting tool carried by said carriage, and driving mechanism connecting the cutting-tool with a suitable source of power, so as to conform to the movement of said carriage; nor the combination, with a rigid frame capable of oscillation on a fixed horizontal axis, a tool-carriage connected wit-l1 said frame by Vibratory arms, tool-holders provided with a guiding and a cutting tool and having jointed connections with said carriage, and driving mechanism connecting the cutting-tool With a suitable source of power in such manner as to conform to the movement of said carriage; nor the combination of a frame capable of oscillation on a horizontal axis, a yoke carried by said frame and capable of oscillation on an axis parallel to that upon which said frame swings, a tool-carriage connected with said yoke by vibratory arms which have jointed connections therewith, and a guiding and a cutting tool carried by said carriage, such com binations constituting the joint invention of myself andPaul W. Post, for which an application for Letters Patent, Serial No. 270,072, was filed in the United States Patent Office April 9, 1888.

I claim- I 1. In a carving-machine, the combination,

with aframe supported in a horizontal position. in suitable bearings and capable of oscillation on a horizontal axis, of atool-carriage provided witha guiding and a cutting tool suspended from said frame by vibratory arms having jointed connections therewith, and a counter-Weight or counter-weights attached to said frame on the opposite side of its axis of oscillation, substantially as and for the purposes set forth.

2. In a carving-machine, the combination, with a rigid frame supported in a horizontal position on suitable bearings and capable of oscillation on a horizontal axis, a pulleyyoke carried by said frame and capable of oscillation on a parallel axis, a tool-carriage provided with a guiding and a cutting tool, and tool-holders having jointed connections therewith, of vibratoryarms having jointed connections with said pulley-yoke and tool-carnage in lines at right angles with the axes thereof, a bracket-bearing swiveled to said pulleyyoke, and a rigid dri vin g-shaft j ournaled at its upper end in said bracket and at its lower end in the cutting-tool holder, substantially as and for the purposes set forth.

3. In a carving-machine, the combination, with a rigid horizontal frame capable of oscillation on a horizontal axis, of a yoke carried by said frame and capable of oscillation ona parallel axis, depending vibratory arms having jointed connections at their upper ends with said yoke in lines at right angles to 1ts axis, a tool-carriage supported by and having jointed connections with the lower ends of said arms, tool-holders having jointed connections with said carriage in lines at right angles to its axis, bracket-bearings swiveled to said yoke, upright driving-shafts j ournaled at their upper ends in said brackets and provided with pulleys and j ournaled at their lower ends in the cutting-tool holders, and a belt or belts connecting said pulleys with a suitable driving pulley or pulleys, substantially as and for the purposes set forth.

a. In a carving-machine, the combination, with a rigid frame capable of oscillation on a horizontal axis, of an oscillatory yoke having pivotal connections with said frame in a line parallel to its axis, a tool-carriage connected with said yoke by depending vibratory arms and constituting therewith a jointed parallelogram, connected guiding and cutting tool holders having jointed connections with said carriage, a bracket swiveled to said yoke, a rigid driving-shaft provided at its upper end with a pulley and journaled in said bracket and in the cutting-tool holder, and a worktable composed of two sliding sect-ions movable at right angles to each other, substantially as and for the purposes set forth.

5. In a carvingmachine, the combination, with a movable tool-carriage provided with a guiding and a rotary cutting-tool, of guiding mechanism connecting said carriage with a suitable support, a rigid driving-shaft connected with said rotary cutting-tool and ex- IOC IIO

tending upwardly therefrom and provided at or near its upper end with a pulley, a movable jointed bearing for said shaft near said pulley capable of receiving the belt-pull and preventing its transmission to the tool-carriage, and a belt connecting said pulley with a driving-pulley, substantially as and for the purposes set forth.

6. In a carving-machine, the combination, with a movable tool-carriage provided with a guiding and a rotary cutting-tool, of a rigid shaft connected with said rotary cutting-tool and provided with a pulley, a movable jointed bearing independent of said carriage supporting said shaft near its pulley so as to receive the belt-pull, and a belt connecting said pulley with a driving-pulley, substantially as and for the purposes set forth.

7. The combination, in a cam-ing'machine, with rocking rods having weights at their rear ends, of vertical rods articulated at their upper ends to said rocking rods and a head having apertures for the passage of the carving devices and connected with said vertical lOtlS by universal joints, substantially as and for the purposes set forth.

8. In a carving-machine, the combination, with an apertured head,aspindle-carrier pivoted therein, and a hand-piece connected with said spindle-carrier, of vertical rods suspending said head and connected therewith by universal joints, horizontal rocking rods, to the front ends of which said vertical rods are articulated, and weights at the rearends of said rocking rods, substantially as and for the purposes set forth.

I11 testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

THOMAS L. SMITH.

Witnesses:

CHAS. 'L. Goss, O. G. HORTON. 

